FS#1098 - Swiftweasel-UXP theme for Iceweasel-UXP

Description:Historically, Swiftweasel was a Firefox-based application built on XUL platform around 2007 and abandoned in 2010. It was optimized for several architectures using the following methods such as the Profile-Guided Optimization (PGO) and binary code optimization for computers with limited resources.